Telephone system.



Nojsfmzz. PATENTBDJAN.29,19Q7.

H. RLTURNER. I .TELEPHONE SYSTEM.

APPLICATION PILED MAY12.1906.

` 4 SHEETS-SHEET 1.

n vauro@ Gimmy No. 842,822. PTENTED 111111.29, 1907. H. R. TURNER.. TELEPHONE SYSTEM. APPLICATION FILED LKAY l2. 1906.

` 4 SHEETS-SHEET 2.

w. 1. v 1 LS PATBNTED JAN. 29, 1907.

H. R. TURNER. TELEPHONE SYSTEM. APPLICATION FILED MAY1z.19os.

4 SHEETS-SHEET 3.

llvll..

Rahan, 1 H

' Inventum wi h1 moes ad w PA'TENTED JAN. 29, 1907.

H. R. TURNER. TELEPHONESYSTEM. APPLICATION FILED MAY12,19oe.

4 SHEETS-SHEET 4.

inventa UNTTED sTATEs PATENT. ersten.

TELEPHONE SYSTEM..

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application med May 12,1906. serial No, 316,578.

tion.

Beit known that I, HERSCHEL R. TURNER, a citizen of the United States, residing at Hoxie, in the county of Sheridan and State of Kansas, have invented a new and iiseul Telephone System; and I do hereby declare the following to be a fell, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to nake and use the saine. 1

This invention relates to telephone systen' s and apparatus therefor.

The object of this invention is to provide a party-line system especiallyr adapted for ri;- ral systems and by which any telephone on a line can be rung up withontringing upvany other on the saute line, by which no others except the two talking can hear the conversation by which any one can tell by nierely looking at his telephone whether the line is in use andwho is talking, and by which a linecall will call every telephoneon the line.

Other objects will appear in the following description and will be nore particularly pointed ont in the appended claim s.

In the drawings, Figure 1 is a diagrammatic view of the circuits of one telephone,

illustrating thediil'erent elenr1 ents-,of the station-circt it thrown out of their norm al positions. Fig. 2 is a like view of thri e stations, the circuits used in calling up being shown in full lines and the other circuits being dotted. Fig. 3 is a like view of three-st ations, showing the circuits ein ployed during communica- Fig. 4 is a like viewv of three stations, showing the circuits used in ringing ofi' in full lines. Fig. 5 is a front elevation of a telehone m ade in accordance with the invention. *ig 6 is a vert-ical section of `the telephone,

s `and Fig. 7 isa detail view of the lock-ont mechanism..` Fig. 8 is a detail v-iewof the governor mechanism, showing several of the surrounding parts.

)teferring to the drawings', 1 indicates one 'ol' the n ain lines, and 2 the other of the irainl lines. Connected in multiple to these lines are the stations A B- C, three only being shown; but it is understood that any 'nurnber n-ay be connected thereto.

.To provide for calling up, each telephone is provided with a current-generator 3, a centritugal governorgi operated thereby. Y This p governor comprises a pair ofballs,l having our spring-arms b, which areconnected to sleeves c and t", one of which is splined to the erators brushes.

core d so as to rotate therewith, but `at the same time to allow the core to have a horizontal movement therethrough. The sleeve c is fixed against mo vement toward the cur.- rent-generator by any suitable means. (Not shown.) The sleeve c is fixed to rotate and to move longitudinally with thecore' d, which has a telescopic movement into the shaft e of the current-generator 3, which core d and shaft e being adapted to rotate together, and

lwhen the radius of the balls in which they ybrush of the generatorbeing connected by a conductor 10 to a circuit-breaker 11,'pivoted intermediate its ends at 12 and balanced at each end by weights 13 to retard its vibrations. Circuit -breaker 11 y normally rests upon a contact 14, which is connected by a conductor 15 with a contact 16 of a switch 17 thepurpose ot whichwill hereinafter appear. Switch 17 is connected by a conductor 18 to contact 18a, which is engaged with the receiver-hook 19 when depri ssed, the receiver-hook being connected by conductor 20 with binding-post 21. When the generator 3 is turned at the stat/ion which is calling up, it first operates governor 4 to shift switch 5 ,and thereby establishes acircuit, current iiowing from one of the generators brushes through -switch 5 and relay 8 to one main line, through one of the telephones to the other main line, thrdugh switch' 17, through circuitbreaker 11, and back-to the other of the gen- I-twwill thus be seen thatI the generator is in multiple with the main line. VAs switch 5 is operated an arm 22 thereon moves a pivoted latch 23 on the circuit-breaker 11 and locks a pivoted armature 24 to the said circuit-breaker, whereby the circuit-breaker and the. armature will move` together. The current passingthrough relay 8 energizes the same, so that its positive pole will attract a negative armature 25, pivoted adjacent the relay and connected by conductor 26 ifi one pole of a battery 27. hen attracted, the armature engages .a

ICO

IIO

trolled by' circuit-breaker 11. As this -current breaks'the relay 8 is of course denergized, thus breaking Athe circuit in which the l electromagnet 30 is located and permitting the armature 24 to return to its normal position and establish the circuit inflwhich is l0- cated the relay 8. This make and break .of the generator-circuit causes the armature. 24 to vibrate, this vibration being ,employed for a purpose hereinafter set forth.

Each station or telephone is provided with a .dial 31, having a series of numbers corre-- sponding to the number of stations in the system and one in addition, 'the additionalone being for a purpose to be hereinafter set forth. IThe dial is also provided with a number of locking notches or recesses 32, corres ending in number to the numbers on the ial. Over this dial is movable an index or pointer 33, having a projection 34 to enter any one of the notches or recesses 32. When not calling-up, this pointer rests over its own nufmber, and when it is desired to call up any other station or party the pointer or index is turned so that it points to the station with which it isidesired to communicate, being firstmoved away from the dial to permit its projection 34. to clear the recess 32. To permit the indexto-be moved away from the dial, the-index is mounted on an axial-lyF movable shaft 35, provided with a fingerpiecel 36 on its outer end and hollowed at its inner end to receive a stud 37 on the telephone. Secured to and turning with the axially-movable shaft 35 isa contact. 38, which is thus adapted to beset to a position corre sponding to the pointer or index .33. Turning about an axis in alinement with the axis about which the setting contact 38 turns is a disk 39, provided. with teeth 40, corresponding in number to the numbers on the dial 31. Each tooth is numbered, and extending from the disk opposite one of the teeth is a contact 41, this toothbeing different in each telephone and corresl ending to the number of the telephone. he disk in each telephone normally restsso that a pawl 42 lies at the zeropoint of the disk, this pawl being connected i to and operated by the .vibrating armature 24.

When the armature 24 has vibrated a suf?- icient number of times to cause the pawl 42 to rotate the disk-39 until the. contact'4l of the party ringing uphas engaged the setfeontact 38, the current from the generator passes from one brush to the bearing of circuitf breaker 11, thence to the contact 41 by conductor 43, and from contact 41 through contact 38, by conductor 44 to relay4 8, and from relay 8 through conductor 7 to switch 5 and through the blade 5 of said switch, thence through the contact 9, through the conductorV fw. back to the generator. In this manner circuit-breaker 11 is cut out of the circuit of energized Vso also will the electroma netf'30 the generator, and as the relay 8 continues continue in the same condition, thus oldin l its armature against further movement an preventing'the further rotation of Athedisk 39. Y

Act-ion of telephonel called .up-Thieswitch 17 of-,all the telephones except ythe one calling urp is open, this position .being `produced'fbyY an insulated projection 45,:adjfustably'mounited on the axially-movable shaft -35 luy-means ot-nut 46, the projection .45 being. so -positioned ywith* :relation to the lpointer onindex Y33 that when said pointerior index is :poinitf ing to the numberof its own telephone the switch 17willbe o en, due-to .the projection engaging the switc and moving it away from .its contact 16, and when sai-d pointer or index is pointing to any other number than its-own Ithe switch 17, being in the ferm of a leatspring, will engage itscontact 16. When a station or telephone is called up., the pulsat-iv l ing current'rom the calling-up station passes from one ofthe line-wiresto all the telephones or stations connected to the linewires,.rst entering through the binding-post 21 'of feach phone, thence lthrough vthe receiver-hoolrlQ to switch 17, which being open rests against -a contact- 47, .to which a cut-out circu-it48is connected. Cut-out circuit- 48 is connected to a contact 49, a ainst which bears the switch -5 in Aall but t This circuit 48 serves -as ya lmeans for cutting` ,out of the circuit the generator and the cil-f f cuit-breaker of all the telephones-except the one calling up. -F rom switch 5 the pulsating e calling-up telephone.

IOC

current passes through relay 8 tothe-'other main line. As relay 8 is thusintermittently be energized the same number of :times lasx-the like magnet ofthe calling-up telephone-,thus causing the armature 24 to bewvibrated :and the disk l39 to be turned the same distance in all telephones of the system. However, as only one Aother telephone in thesystem will have its settable contact 38 in the same position as the calling-up telephone this will e the only .one to receive the proper signal'- that is, the only otherone in :which the contact38 and the contact 41 will. engage.;

ALarm-circuit.-When contacts 38 and 41 energized in the same manner las-the cal-.linge up telephone, the electro-magnet 30. will also `51, closed by when the governor 4 is actuated, thus providing means for breaking the alarm-circuitv of the calling-up telephone. The alarm-circuit leads by conductor from switch 52 to the battery 27. Leading from battery 27 so as to include one cell thereof is a conductor 56, also forming part of the alarm-circuit and connected to an electric bell 57. Bell 57 is connected by conductor 59 to a switch 58, held closed by and insulated from the receiver-hook 19. Switch 58 is connected by conductorO 'with a contact 61, which is engaged by the armature 24 when the latter is positioned away frominagnet`30, the armature, togetherwith pawl 42vand disk 39, acting to complete the alarm-circuit to theV contact 41.'- It is apparent that as soon as contact 41 engages contact 38 the alarm or signal will be sounded and will continue until the receiver is removed from its hook or until the party callin up rings off. Of course there will be a s ight signal or alarm in all telephones of the number less than thejone called up,- but this Will only be momentary and will serve to notify that the line is busy.

moved from the receiver-hook 19, the said hook moves under the action of a sprin 62 against a pair of contacts 63 and 64. cntact 63 leads by conductor 65 to inductioncoil66 to receiver 67, which is connected by conductor 68 with disk 39. The remainder of the receiver-circuitis formed by the conductor 44, leading from contact 38 to the conductor 7, and consequently to the other Wire. The transmitting-circuit is in shunt with the receiving-circuit and leads from the contact 64 by conductor 69 to one pole of thebattery 27, from battery 27 by conductor 70 to the transmitter 7.1, and fromthe transmitter to the induction-coil 66.

Ring/ng o--In ringing off a current is sent through the line in a direction opposite to that in which it is sent when ringing up.

This is accomplished in suitable manner.-

The connection of the brushes'with the generator 3j may be reversed or the generator may be 'rotated in the opposite direction. The generating-circuit Willbe the saine as in calling up g but thepoles of the double-polarized relay will be reversed, thus causing in all the telephones of the system the-attraction of a positive armature 72 instead of the negative armature 25. In this manner the pawloperating electromagnet 30 is not energized, but a trip-circui1v is brought into operation. This trip-circuit comprises the conductor 2 6, before mentioned,connected to one pole of the battery and the armature 72, a conductor 73, connecting the other pole of the battery and the electromagnet 74, and a conductor 75, connecting the electro'magnet 74 anda contact 76, with which the armature 72 engages when it is attracted by the relay 8.

vWhen this trip-circuit is established, its electaking place on the line.

'tromagnet 74 attracts one end of a pivoted dog serving to hold the disk 39 While the latter is adjusted bypawl 42. y Upon` the release ofthe disk it returns to its originalposi- Ition under the action of a coil-spring 79,

which is placed under tension by the pawl 42 in rotating the disk.

Lock-out mectcLrLism.-To prevent any of the indexes or pointers .33 being turned after a party has started to ring up, the following mechanism is provided: Each disk 39 carries a pin 8l), which is eccentrically mounted thereon and normally rests in a notch 81 in an arm 82 of a pivoted bell-crank lever 83. The other end of the bell-crank lever 83 is connected by `a link 84 with .an arm 85, sef cured at one end to a rock-shaft 86. A second arm 87 is secured at one en d to the r ckshaft 86 and is notchedto ent'er 'anannu ar groove 87 on the axially-movable shaft 35. When the disks 39 begin to rotate, they release the arms 82 and permit links 84 to move upwardly into engagement with the trippinglevers 77, before mentioned, under the action of their springs 88,l thus pulling the arm 87 into the annular grooves 87 and preventing the axial movement ofthe shafts 35. Upon the operation of the tripping-levers 77 the links 84 are depressed, thus unlocking the indexes or pointers 33.. As it is only by turning a pointer or index 33 to the position of the pointer or. index of the telephone called up that a connection can be made, and as this movement is prevented, it will be seen that none but the tWo talking can hear what is At first lance it would appear that if a party desire to hear the messages sent to any one of his neighbors he could leave his ind ex pointing to his neighborvs number and when his neighbors Would be called up so would he, but this lis not thecase. If a party leaves hisv pointer or index at any number other than his own, the switch 17 will move to a position to cut out the relay 8, and thus prevent the operation of the electromagnet 30. The telephone is therefore virtually disconnected from the line.

/m@ (ff1Z-v.'p.--So that conmulmcation -may be established between all the telehones oh a line when there is a 'aiessarfc of IOO ILO

general interest t he followingl means is provided: llach axially-movable shaft 35 is providectv'ith a second contact 89, which when the pointer is at its own number lies in a position to be engaged by theprojection f 41 when the pawl 42 is in the' last toothot the disk 39. It is apparent, that'when'the index or pointer 33 of any one of the telephones is turned't'o the last number on dial 31 a connection/With all the other telephones of the system Will' be obtained, as. Willbe understood. The front of each-telephone below the dial 31 is cut away and a glass-90 is fitted in the opening. l certain whether-the line is busy, as the disk 39 is visible through the opening.

Having thus described my invention, what lthe generator-current tor operating the moving contacts. l

2. The combination with the two linewires, ot a plurality of stations connected in multiple to the line-wires7 and each having a settable and a moving'contact, a generator at each station connected in multiple to theline-wires7 a circuit-breaker in each generator-circuit, and electromagnets controlled by the generator-current for operating the moving contacts said electromagnets also operating: the circuit-breakers.

3. 'lhe combination with two line-wires, of a pluralityoiC stations, connected in multiple -to tlie-line-wires and each having a settable and a moving contact a generator at each station connected in multiple to the line-wires, a relay in each generator-circuit, a battery-circuit controlled by each relay, and an electromagnet controlling each moving contact and controlled by the rel ay.`

The combination with two line-wires, of 'a plurality of stations connected in multiple tothe line-wires and each having a settable and a moving contact, an electromagnct controlling each niovingcontact, a gencratorand means ior'producing a pulsating current'along the line and at each station to act on'A the electromagnets of all the stations. laf-5i The combination with two line-wires, of a plurality of stations connected in multiple. to the line-wires, and each havingr a s ettable and a moving contact, a generator at each station connected to the line-wires, means at each station for operating the movingco'nta'ct when the generator ot one station is operated, and means at each station for cuttingthe generators of all stations, except theV one calling up, out otcircuit lwith the line-wires7 when a generator is operatedto call up.

6. The. combination with two line-wires, of a plurality ol stations connected in multiple to the line-wires, and each having a settable andl a moving contact7 an electromag--.

net controlling each moving contact, 'a generat-or, and means for 'producing a pulsating current a-lnng the line and at each station to act on the lectromagncts of all the stations, said means being normallyl out of circuit with the lineviresfand being constructed 'to be vthrown int'o'- `'id rcuit when-,the` ineansnsoperated to callputp.

By this means one can asto the 8. The combination Y with two line-wires, of a plurality of stations connected in multiple to the line-wires, and each having a settable and a moving contact, the moving contacts 'of all the stations normally resting in Vlike positions and the settable contacts noroi the settable' contacts and means at each station connected to the line-wires for moving all the moving contacts in synchronisr'n to the settable contacts, and means at each station moved to cut out a station when a settable contact is away from its normal position and the moving contacts are operated from another station. Y

9. The combination with two line-wires'ot` a plurality of stations connected in multiple to the line-wires and each having a settable and a moving contactnthe moving contacts of all the stations normally resting' in like positions, and the settable contacts normally resting in dillerent positions and settable to positions corresponding to any other of the settable contacts; and means at each station l connected to tlie line-wires for moving all the mally resting in different positions, and set-- table to positions corresponding to any other.

moving contacts in synchronism to the settable contacts, and locking mechanism for the settable contacts effective as long as the mov.- ing contacts are away from their norm al-positions.

cuit when the local generator is operated.

11. The combination with a settablecontact,- of a moving contact, and mechanism Alocking the settablecontact against move'- rnent when the moving contact is away troni its normal position.' y l l2. The combinationwith the'settable contact, of a toothed disk, an electrically-oper'- fated pawl for moving the toothed disk', a conj 1Q. The. combination with Athe two linebreakers in the generator-circuits, means normally positioned to cut each generator out of the circuit with the line-wires, but op"- erated to throw the local generator into cir- IIO - y anyone of said recesses-L an axially-movable' 1 tact moving with the disk, and means locking the settable contact against-movement when tion L 13. The combination with av dialL provided with a plurality of notches orrecesses, of an index or pointer having a projection to enter the disk is moved from its normal posishaft to which saidfp'o'inter or index i's secured, a settable contact*v turning with the shaft and the index, and an electrically-operated movingcontactw'..

14. The combination with a dial provided with a plurality of notches or recesses, of an index or pointer having a projection to enter any one of said recesses, an axially-movable shaft to which said pointer `or index is vsecured, a' settablei contact [turning with the shaft andthe index, and "an electrically-.operated moving contact, and locking inechanism controlled bythe moving contact, and moved into engagement with the axiallymovable shaft when the moving contact is away from its normal position.

15." The combination with the generator adapted 'tobe connected in multiple to the line-wires, 'of a relay in the generator-circuit,

a battery-circuit, a circuit-breaker inthe gencrater-circuit, a settable, contact, a moving contact, and an electromagnetinthe batterycircuit operating the circuit-breaker and moving the moving contact.

16. The combination with the generator adapted to be connected in multiple-to the line-wires, of a switch in the generator-circuit, a relay in the generator-circuit, a batterycircuit, an electromagnet in thebattery-circuit, an armature for the electromagnet, a

circuit-breaker, a lock for connecting the armature` to the circuit-breaker when the switch is operated and la governor operated y by the generator and operating the switch.

17. The combination with the generator, of a moving contact, a disk by which the contact is carried, a spring moving the-diskin' one direction, a pawl moving the disk against the action of the s ring, a dog holding the' disl'when moved y the pavvl,- an electromagnet for the dog, an electromagnet for the pawl, a relay in the generator-circuit, a pair of oppositely-polarized armatures forthe relay, one of which controls the p awl-operating electromagnet, and the other of' which controls the dog-operating electromagnet, and a circuit-breaker in the generator-circuit, controlled by the pawl-operating electromagnet.

18. The combination with the moving contact, of anelectromagnet for moving. the contactl in one direction, an electromagnet controlling its movement in the other' direction, and a circuit-breaker operated by one of kthe velectromagnets and in turn'. producing a pullsatingcurrentin said magnet. l

19. The'combination of a settable contact,

ling said latter contact, la battery-circuit inc ircuit, a relay arranged `in` multiple with thel line-wires, through the shunt-circuit, 'when the settable contact is normal' position and controlling the battery-circuit, a generator, a governor operated thereby,and two switches one of which is operated by the generator the other of which is operated by the settalile contact to cut out the shunt-circuit. 20. 'The combination with a movmgcon- `tact, of a settable contact, an electromagnet controlling Vthe moving contact, and a polarized relay controlling the circuit of the 'electromagnet whichIis limited in its operation 4by the settable contact.

21. `The combination with the l generator, of a relay, a movmg contact control ed by the cluding the relay and the other including they 'of a relay, a settable contact, amoving contact, an electromagnet controlling said moving contact, a battery-circuit in which the two circuits, one including the relay, and the other including the relay and thegenerator, a circuit-'breaker in the circuit including the generator, and means operated by the genwhich is located4 the electromagnet, a shuntrelay, a settable contact,two circuits one in- .85 relay and the generator, and asw'itch con- 23. The combination With the ge ner ator,.`

lroo

magnet .is located, .controlled by the relay,

erator causing the circuit-breaker to *be opern ated by the electromagnet.

24. Thecombination with a moving contact, of an'electromagnet operating the contact, a generator, a circuit-breaker and means operated by the generator causing the circuit- 25. The combination with the settable concircuit-breaker arranged to send a pulsating current to the line-Wires, and means adapted to receive a pulsating current either from .the

line-wires orfrom the generator and to' oper'- vate theI moving contact.

In 'testimony whereof" I have signed my name to this specification in the presence of FARNA DTU'RNER, WASHINGTON TURNER.

breaker to be operated bythe electromagnet.lv

tact, of a moving contact' a generator and. 

